# HG changeset patch
# User John Tsiombikas <nuclear@siggraph.org>
# Date 1304975180 -10800
# Node ID 40491760d6e38dace21a87d32d306315e86ba548

starting work on SimplyGL

diff -r 000000000000 -r 40491760d6e3 Makefile
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Makefile	Tue May 10 00:06:20 2011 +0300
@@ -0,0 +1,56 @@
+src = $(wildcard src/*.c)
+obj = $(src:.c=.o)
+dep = $(src:.c=.d)
+lib_a = libsgl.a
+soname = libsgl.so.$(somajor)
+lib_so = $(lib_so_$(sys))
+
+somajor = 0
+sominor = 0
+
+lib_so_unix = $(soname).$(minor)
+lib_so_mac = libsgl.dylib
+
+sharedopt_unix = -shared -Wl,-soname,$(soname)
+sharedopt_mac = -dynamiclib
+
+ifeq ($(shell uname -a), Darwin)
+	sys = mac
+else
+	sys = unix
+endif
+
+AR = ar
+CC = gcc
+CFLAGS = -pedantic -Wall -g -Iinclude
+
+.PHONY: all
+all: $(lib_so) $(lib_a)
+
+$(lib_a): $(obj)
+	$(AR) rcs $@ $(obj)
+
+$(lib_so): $(obj)
+	$(CC) $(sharedopt_$(sys)) -o $@ $(obj)
+
+-include $(dep)
+
+%.d: %.c
+	@$(CPP) $(CFLAGS) -MM -MT $(@:.d=.o) $< >$@
+
+.PHONY: clean
+clean:
+	rm -f $(obj) $(dep) $(lib_so) $(lib_a)
+
+.PHONY: install
+install:
+	mkdir -p $(PREFIX)/include $(PREFIX)/lib
+	cp $(lib_a) $(PREFIX)/lib/$(lib_a)
+	cp $(lib_so) $(PREFIX)/lib/$(lib_so)
+	cp include/sgl.h $(PREFIX)/include/sgl.h
+
+.PHONY: uninstall
+uninstall:
+	rm -f $(PREFIX)/lib/$(lib_a)
+	rm -f $(PREFIX)/lib/$(lib_so)
+	rm -f $(PREFIX)/include/sgl.h
diff -r 000000000000 -r 40491760d6e3 include/sgl.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/sgl.h	Tue May 10 00:06:20 2011 +0300
@@ -0,0 +1,34 @@
+#ifndef SGL_H_
+#define SGL_H_
+
+#define SGL_DOUBLE		1
+#define SGL_DEPTH		2
+#define SGL_STENCIL		4
+#define SGL_STEREO		8
+
+enum {
+	SGL_CREATE,
+	SGL_CLOSE,
+	SGL_DISPLAY,
+	SGL_RESHAPE,
+	SGL_KEYBOARD,
+	SGL_MOUSE,
+	SGL_MOTION,
+	SGL_PASSIVE,
+	SGL_IDLE,
+
+	SGL_NUM_CALLBACKS
+};
+
+int sgl_set_video_mode(int xsz, int ysz, int bpp);
+int sgl_get_video_mode(int *xsz, int *ysz, int *bpp);
+
+int sgl_window(int x, int y, unsigned int mode);
+void sgl_close(int win);
+
+int sgl_push_callbacks(void);
+int sgl_pop_callbacks(void);
+void sgl_clear_callbacks(void);
+void (*sgl_callback(int idx, void (*func)()))();
+
+#endif	/* SGL_H_ */
diff -r 000000000000 -r 40491760d6e3 src/cb.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cb.c	Tue May 10 00:06:20 2011 +0300
@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <string.h>
+#include "sgl.h"
+
+struct cbnode {
+	void (*func[SGL_NUM_CALLBACKS])();
+	struct cbnode *next;
+};
+
+struct cbnode first_cbnode;
+struct cbnode *cb = &first_cbnode;
+
+int sgl_push_callbacks(void)
+{
+	struct cbnode *node;
+
+	if(!(node = malloc(sizeof *node))) {
+		return -1;
+	}
+	node->next = cb;
+	cb = node;
+	sgl_clear_callbacks();
+	return 0;
+}
+
+int sgl_pop_callbacks(void)
+{
+	struct cbnode *node;
+
+	if(!cb->next) {
+		return -1;
+	}
+
+	node = cb;
+	cb = cb->next;
+	free(node);
+	return 0;
+}
+
+void sgl_clear_callbacks(void)
+{
+	memset(cb->func, 0, sizeof cb->func);
+}
+
+void (*sgl_callback(int idx, void (*func)()))()
+{
+	void (*prev)() = cb->func[idx];
+	cb->func[idx] = func;
+	return prev;
+}